From Tomshardware forums:
"Age of Empires III
Black & White 2
Call of Duty 2
City of Villains by NCSoft
Doom3 by IDsoftware
F.E.A.R. by Vivendi (allegedly enabled, but real world no real performance increase to FPS...)
Peter Jackson’s King Kong
Prey 1.2 & 1.3 by Take2
Quake 4 by IDsoftware
Quake 5 (promised when released)
Serious Sam 2 by Croteam
Splinter Cell by Tom Clancy
Supreme Commander by Gas Powered Games Corp.
The Elder Scrolls IV: Oblivion (on pre-order)
The Movies
Tom Clancy’s Ghost Recon Advanced Warfighter
Tom Clancy’s Rainbow Six 3
Tony Hawk’s American Wasteland
Unreal Engine 3
Vangauard Saga of Heros
World of Warcraft
Can you think of some more to add to the list? . . .
Probably every game released in 2006 and on will support dual core to some extent.
and I believe quite a bunch more are supported or fixing to get support via patch... so the list is growing, and any popular game in the planning is sure to have dual-core support.
Not to mention ATI's and nVidia's graphic drivers are multi-threaded giving an additional boost to dual core performance.
If you run anti-virus or software firewalls as a service, this is not an as much of a negative impact on speed, since they are multi-threaded and also benifit from dual core by running background services on the second processor...
this is good news to dual core buyers and fluid motion like gaming with all the effects on high."
quoted from
http://forumz.tomshardware.com/games/Dual-Core-supported-games-ftopict94969.html